UPDATED: Accident slowing northbound I-90/39 traffic at Janesville

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JANESVILLE—The northbound on-ramp from Highway 26 onto Interstate 90/39 in Janesville is closed following an accident at about 7:55 a.m. today. One northbound lane on the Interstate is reported open, but traffic was slow and backing up.

At 8:55 a.m., a traffic camera indicated the semi had been pushed onto the median, and traffic was beginning to flow.

The State Patrol reports a semi tractor and its trailer became separated in an accident near the interchange.

The Department of Transportation in an automated alert said the incident would take about two hours to clear.

The Janesville Fire Department is reportedly on scene, and a wrecker was enroute.